<template>
    <div>
        <el-table ref="dataTable" :data="dataSource?.list || []" :height="tableHeight" :stripe="options.stripe"
            :border="options.border" header-row-class-name="table-header-row" highlight-current-row
            @row-click="handleRowClick" @selection-change="handleSelectionChange">
            <!-- selection选择框 -->
            <el-table-column v-if="options.selectType && options.selectType == 'checkbox'" type="selection"
                :selectable="selectedHandler" width="50" align="center">
            </el-table-column>
            <!-- 序号 -->
            <el-table-column v-if="options.showIndex" label="序号" type="index" width="60" align="center">
            </el-table-column>
            <!-- 数据列 -->
            <template v-for="(column, index) in columns">
                <template v-if="column.scopedSlots">
                    <el-table-column :key="index" :prop="column.prop" :label="column.label"
                        :align="column.align || 'center'" :width="column.width">
                        <template #default="scope">
                            <slot :name="column.scopedSlots" :index="scope.$index" :row="scope.row"></slot>
                        </template>
                    </el-table-column>
                </template>
                <template v-else>
                    <el-table-column :key="index" :prop="column.prop" :label="column.label"
                        :align="column.align || 'center'" :width="column.width" :fixed="column.fixed" show-overflow-tooltip>
                    </el-table-column>
                </template>
            </template>
        </el-table>
        <!-- 分页 -->
        <div class="pagination" v-if="showPagination">
            <el-pagination v-if="dataSource.totalCount" background :total="dataSource.totalCount"
                :page-sizes="[15, 30, 50, 100]" :page-size="dataSource.pageSize" :current-page.sync="dataSource.pageNo"
                layout="total, sizes, prev, pager, next, jumper" @size-change="handlePageSizeChange"
                @current-change="handlePageNoChange" style="text-align: right;"></el-pagination>
        </div>
    </div>
</template>

<script setup>
import { ref } from 'vue';

const emit = defineEmits(["rowSelected", "rowClick"])
const props = defineProps({
    dataSource: {
        type: Object,
        default: {
            list: [],
            pageNo: 1,
            pageSize: 15,
            totalCount: 0
        }
    },
    showPagination: {
        type: Boolean,
        default: true,
    },
    options: {
        type: Object,
        default: {}
    },
    extHeight: {
        default: 70,
    },
    columns: Array,
    fetch: Function, // 获取数据的函数
    initFetch: {
        type: Boolean,
        default: true
    },
    selected: Function,
})

const topHeight = 60 + 39 + 20 + 10 + 42 + 20 + 2

const tableHeight = ref(
    props.options.tableHeight ? props.options.tableHeight : window.innerHeight - topHeight - props.extHeight
)

// 初始化
const init = () => {
    if (props.initFetch && props.fetch) {
        props.fetch()
    }
}

init();

const dataTable = ref()
// 清除选中
const clearSelection = () => {
    dataTable.value.clearSelection()
}

// 设置行选中
const setCurrentRow = (rowKey, rowValue) => {
    let row = props.dataSource.list.find((item) => {
        return item[rowKey] === rowValue
    })
    dataTable.value.setCurrentRow(row)
}

// 暴露子组件
defineExpose({ setCurrentRow, clearSelection });

// 点击行
const handleRowClick = (row) => {
    emit("rowClick", row)
}

// 多选
const handleSelectionChange = (row) => {
    emit("rowSelected", row)
}

// 切换每页大小
const handlePageSizeChange = (size) => {
    props.dataSource.pageSize = size
    props.dataSource.pageNo = 1
    props.fetch()
}

// 切换页码
const handlePageNoChange = (pageNo) => {
    props.dataSource.pageNo = pageNo
    props.fetch()
}

// 复选事件
const selectedHandler = (row, index) => {
    if (props.selected) {
        return props.selected(row, index)
    }
}

</script>

<style lang="scss" scoped>
.pagination {
    padding-top: 10px;
}

.el-pagination {
    justify-content: right;
}

.el-table__body tr.current-row>td.el-table__cell {
    background-color: #e6f0f9;
}

.el-table__body tr:hover>td.el-table__cell {
    background-color: #e6f0f9 !important;
}
</style>